拟遗传代数的Exact Borel子代数与主子代数

Exact Borel Subalgebras and Principal Subalgebras of Quasi-hereditary Algebras

利用exactBorel子代数刻划了遗传代数 。

A characterization of hereditary algebras is given by means of exact Borel subalgebras.Moreover, a sufficient and necessary condition,which states when a principal subalgebra becomes an exact Borel subalgebra,is proved.